Need to convert sed expression to a similar awk expression

I am trying to re-engineer the following function in a script so that it can use awk to search for the /home mount in fstab and comment out the line. The reason being the method for mounting the /home directory can vary... eg, UUID, LVM path, Label... etc

So basically I just need the first line below changed so that it uses awk to search for /home instead of using sed to un-comment the /dev/mapper/os_vg-home line

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